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Leases - Future lease payments and sublease income (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Operating Lease costs |  |
2022 | $ 613 |
2023 | 439 |
2024 | 240 |
2025 | 182 |
Total | 1,474 |
Less imputed interest | (84) |
Lease Liabilities | 1,390 | $ 2,069
Finance lease costs |  |
2022 | 51 |
2023 | 5 |
Total | 56 |
Less imputed interest | (4) |
Total | 52 | $ 326
Sublease Payments received |  |
2022 | 70 |
2023 | 12 |
2024 | 3 |
Total | 85 |
Less imputed interest | (2) |
Total | $ 83 |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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